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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 16 (1990), S. 0 
    ISSN: 1365-2559
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A case of acquired immune deficiency syndrome (AIDS), in which multinucleated giant cells, characteristic of the human immunodeficiency virus (HIV)-encephalitis, were found in a mediastinal nodal deposit of lymphoma, is reported. Immunocytochemical studies confirmed the macrophage/histiocytic origin of these cells and the presence of HIV antigen in their cytoplasm. The occurrence of such multinucleated giant cells, representing the hallmark of HIV infection, has not been previously reported outside the central nervous system.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-2307
    Schlagwort(e): POEMS syndrome ; Peripheral neuropathy ; Angiofollicular lymph node hyperplasia ; Osteosclerotic myeloma
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The pathological features of three European patients with plasma cell dyscrasia, osteosclerosis and a multisystem disorder, most frequent in Japan, that includes polyneuropathy, organomegaly, endocrinopathy, M-protein anti skin changes (POEMS syndrome), are reported. The material was obtained from biopsies (peroneal nerve, lymph node) and general autopsy, including hypophysis, in one case. The most salient findings were: peripheral nerve lesions, including both segmental demyelination and axonal degeneration, with socalled uncompacted myelin lamellae (UML); angiofollicular lymph node hyperplasia (AFLNH); and non inflammatory vascular changes. Though not specific, it appears that UML and AFLNH may be contributive findings in atypical cases of POEMS syndrome (incomplete forms, lack of underlying malignant plasma cell dyscrasia or circulating monoclonal immunoglobulin). Among the various autopsy findings we emphasize the skin thickening which was secondary to a hyaline sclerosis of the papillary dermis, and the presence in adenohypophysis of numerous cells showing positive reactions with the anti-alpha MSH antibody. Though immunological, vascular and hormonal disturbancies have been implicated at the origin of several manifestations of the disorder, the pathogenesis of the POEMS syndrome remains obsecure.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    facet.materialart.
    Unbekannt
    Firenze : Periodicals Archive Online (PAO)
    Il Pensiero politico. 16:2 (1983) 241 
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1432-0533
    Schlagwort(e): Intraspinal arteriovenous fistula ; Klippel-Trenaunay-Weber syndrome ; Hemangiomatosis ; Selective spinal arteriography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary An intraspinal vascular malformation associated with the Klippel-Trenaunay-Weber (KTW) syndrome initially was thought to be intramedullary on angiographic findings. Postmortem examination revealed an entirely posterior extramedullary arteriovenous fistula (AVF) fed by the anterior spinal artery. The association of the KTW syndrome with a so-called intramedullary AVF has been described in the literature without any pathologic confirmation (11 cases). Our case emphasizes the difficulty of determining the exact morphology and location of spinal AVF on arteriography. The association of the KTW syndrome with a retromedullary AVF can be explained on a developmental basis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 69 (1986), S. 28-32 
    ISSN: 1432-0533
    Schlagwort(e): Monstrocellular brain tumor ; Malignant glioma ; Foamy cells
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A man of 32 years was admitted with a 3-month history of temporal lobe epilepsy. CT-Scan showed a well-circumscribed area of heterogenous contrast enhancement in the right temporal lobe. Gross total resection was performed but the tumor recurred: the patient died 6 months after the onset of symptoms. There was no autopsy. Histology revealed a highly pleomorphic neoplasm with extensive zones of necrosis. Monster cells, up to several hundred micrometers in diameter, with multiple and/or multilobed nuclei were numerous and showed emperipolesis for polymorphonuclear, mononuclear, and small tumor cells. Abundant mitoses were observed. Tumor cells of all sizes had ground-glass or vacuolated cytoplasm which obscured their glial nature. GFAP was demonstrated in some neoplastic cells. Reticulin fibers were confined to perivascular areas where mononuclear inflammatory cells were sometimes noted. Vascular proliferation was mild. Electronmicroscopic study revealed that the cytoplasms of the tumor cells contained abundant lipid droplets, numerous mitochondria, and glio-filaments. Such a tumor has been reported recently as “malignant glioma with heavily lipidized tumor cells”. This rare entity, previously reported as xanthosarcoma of the brain, represents a subgroup of primitive monstrocellular cerebral tumors.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    ISSN: 1432-0533
    Schlagwort(e): Acquired immune deficiency syndrome (AIDS) ; Human immune deficiency virus (HIV) ; Cerebral toxoplasmosis ; Progressive multifocal leucoencephalopathy ; Papovavirus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A 29-year-old homosexual male with AIDS presented with progressive encephalopathy and cytomegalovirus (CMV) pneumonia. Neuropathological examination revealed toxoplasma abcesses in corpus callosum, basal ganglia and cerebellar white matter; demyelinating foci in the parietal white matter, with microscopic changes typical of progressive multifocal leucoencephalopathy and intranuclear papovavirus inclusions in oligodendrocytes; and lesions of subacute encephalitis in the periventricular regions with large cells positive by immunostaining for CMV. Diffuse myelin loss was observed in the cerebral white matter. Multinucleated giant cells were numerous in the demyelinated areas, they were also observed in close relationship with papova, CMV and Toxoplasma lesions. Immunostaining of these cells was positive for histiocyte markers and negative with the leucocyte common antigen monoclonal antibody. Some of them contained virus-like particles measuring around 100 nm similar to human immune deficiency virus (HIV) as observed in human brain.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 69 (1986), S. 332-336 
    ISSN: 1432-0533
    Schlagwort(e): Saccular microaneurysm ; Cerebral (pontine) lacunae ; Thrombosis ; Microhemorrhages
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The authors present the case of a hypertensive patient with a thrombosis of a saccular microaneurysm (SMA) and underlying cerebral (pontine) lacunae. This SMA lay at the junction between the main vessel and two small feeding arteries penetrating into the necrotic territory. Microhemorrhages were observed in and outside the aneurysmal wall. Very sinuous narrow channels of recanalization crossed the thrombosis between the upstream and downstream vessels. The anatomical relationship between the SMA and the lacunae has been histologically demonstrated.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 73 (1987), S. 202-208 
    ISSN: 1432-0533
    Schlagwort(e): Almitrine ; Toxic neuropathy ; Peroncal nerve morphometry ; Micro-angiopathy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We report the quantitative and qualitative, light and electron microscopic studies, including teased fiber preparations of nerve biopsies obtained from eight patients, treated with almitrine, presenting with the characteristic association of a sensory peripheral neuropathy with a recent body weight loss. The data were consistent with (1) an axonal damage affecting (a) myelinated fibers, predominantly large ones and (b) to a lesser degree unmyelinated fibers, (2) some degree of segmental demyelination. Marked axonal regeneration was observed when the nerve biopsy was delayed after withdrawal of the drug, Microangiopathy secondary to the formation of concentric lamellae from the basement membrane was observed in five patients suffering from chronic hypoxemia. Almitrine is an agonist of the chemoreceptors. The pathogenesis of the toxic neuropathy induced by this compound remains obscure. Clinical features do not fit with a purely hypoxic mechanism at the origin of the neuropathy.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    ISSN: 1432-0533
    Schlagwort(e): Castleman disease ; Monoclonal gammopathy ; Myelin ; Peripheral neuropathy ; POEMS syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Mechanisms of peripheral neuropathies in polyneuropathy, organomegaly, endocrinopathy, M-protein and skin changes (POEMS) syndrome are poorly understood. A peripheral nerve biopsy was performed in 22 patients. Of these 9 had histological features of Castleman's disease on lymph node biopsies, and 19 had a monoclonal lambda light chain in their serum. Certain nerve fragments were paraffin embedded, others were frozen and studied by direct immuno-fluorescence, and others were fixed for ultrastructural examination. Paraffin-embedded fragments did not show any amyloid deposits, and at direct immunofluorescence there was no immunoglobulin fixation. At ultrastructural examination, features of uncompacted myelin lamellae (UML) were present in 19 patients, and their frequency varied from 1% to 16% of myelinated fibres. Up to now UML have been reported only in 7 patients with POEMS syndrome in the literature. UML have also been noticed in a few cases of inflammatory demyelinating polyradiculoneuritis and inherited tendency to pressure palsy.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    ISSN: 1432-0533
    Schlagwort(e): AIDS ; Cytochrome c oxidase ; Mitochondrial myopathy ; Tubular aggregates ; Zidovudine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We report on two patients, who had myalgias while receiving long-term zidovudine treatment for an HIV infection, in whom muscle biopsy findings included a partial cytochrome c oxidase (CCO) deficiency, a feature of zidovudine myopathy, and tubular aggregates, a finding hitherto unreported in HIV-infected patients. The CCO deficit was observed in 28% and 24% of muscle fibers, respectively. Tubular aggregates were the prominent histopathological feature in patient 1, and were detected by systematic electron microscopy in patient 2. Inflammation and myonecrosis were not detected. In patient 1, the typical mitochondrial and myofibrillar changes of zidovudine myopathy were present and 12% of fibers showed tubular aggregates. The aggregates were not stained at CCO reaction, and 96% of myofibers enclosing tubular aggregates showed a decreased CCO activity. This suggested more than a chance association between mitochondrial dysfunction and the formation of tubular aggregates. We conclude that tubular aggregates are detected in some patients treated by zidovudine, and that the finding could be related to the long-term administration of the drug.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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